Boston Scientific Ownership | Who Owns Boston Scientific?

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Boston Scientific Ownership Summary

Boston Scientific is owned by 90.20% institutional investors, 0.23% insiders, and 9.57% retail investors. Vanguard group is the largest institutional shareholder, holding 9.42% of BSX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.18% of its assets in Boston Scientific shares.

BSX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Boston Scientific	90.20%	0.23%	9.57%
Sector	Healthcare Stocks	35.58%	11.87%	52.55%
Industry	Medical Device Stocks	35.88%	10.92%	53.20%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	139.69M	9.42%	$13.32B
Blackrock funding, inc. /de	131.82M	8.89%	$8.27B
Fmr	74.23M	5.01%	$4.66B
State street	67.99M	4.59%	$4.27B
Jpmorgan chase	33.35M	2.25%	$2.10B
Geode capital management	33.29M	2.24%	$2.08B
Primecap management co/ca/	32.53M	2.19%	$2.04B
D. e. shaw	24.31M	1.64%	$1.53B
Norges bank	23.07M	1.56%	$2.20B
Morgan stanley	22.27M	1.50%	$1.40B

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Bollard group	18.53M	34.26%	$1.16B
Bancreek capital management, lp	39.00K	10.59%	$2.45M
Prosight management, lp	795.55K	8.19%	$49.92M
Dkrt investments	435.00K	6.92%	$27.30M
Ecofi investissements sa	50.00K	5.71%	$3.14M
Iron triangle partners lp	495.01K	4.87%	$44.21M
Rhenman & partners asset management ab	625.00K	4.84%	$39.22M
Catalio capital management, lp	299.32K	3.92%	$18.78M
Stoneridge investment partners	82.82K	3.76%	$5.20M
Ilex capital partners (uk) llp	2.23M	3.45%	$140.19M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	23.07M	0.24%	23.07M
D. e. shaw	24.31M	0.92%	13.06M
Wellington management group llp	18.83M	0.22%	9.12M
Franklin resources	14.50M	0.22%	8.82M
Vanguard fiduciary trust	8.38M	0.13%	8.38M

Top Sellers

Holder	Shares	% Assets	Change
Fmr	74.23M	0.25%	-23.16M
Capital world investors	15.31M	0.13%	-11.84M
Fisher asset management	450.60K	0.01%	-8.69M
Millennium management	4.34M	0.10%	-6.93M
Egerton capital (uk) llp	-	-	-5.39M

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	23.07M	0.24%	23.07M	$2.20B
Vanguard fiduciary trust	8.38M	0.13%	8.38M	$525.98M
Vanguard global advisers	3.24M	0.11%	3.24M	$203.58M
Axa investment managers	2.82M	0.74%	2.82M	$275.01M
Vanguard asset management	2.57M	0.14%	2.57M	$161.09M

Sold Out

Holder	Change
Inlight wealth management	-2.00
Goalvest advisory	-3.00
Mendota financial group	-3.00
University of texas/texas am investment managment	-8.00
Blume capital management	-9.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	1,718	-6.98%	1,337,429,778	-1.86%	90	1.06%	837	-6.58%	633	-7.46%
Dec 31, 2025	1,378	-22.50%	903,039,979	-32.58%	60	0.74%	651	-30.30%	521	-5.62%
Sep 30, 2025	1,701	-2.47%	1,323,886,993	2.39%	89	1.17%	897	0.79%	526	-4.71%
Jun 30, 2025	1,717	1.54%	1,345,387,314	2.31%	90	1.15%	882	-0.56%	537	-2.01%
Mar 31, 2025	1,673	7.04%	1,313,233,213	-1.58%	88	1.08%	876	7.09%	545	11.00%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	47.28M	3.18%	149.73K
Vanguard US Total Market Shares ETF	46.63M	3.16%	62.58K
Vanguard 500 Index Investor	38.45M	2.59%	690.75K
Vanguard PRIMECAP Inv	21.06M	1.42%	416.15K
iShares Core S&P 500 ETF	19.18M	1.29%	56.29K
Fidelity 500 Index	18.94M	1.27%	73.37K
SPDR® S&P 500 ETF	18.33M	1.24%	-268.46K
SPDR® S&P 500® ETF	17.88M	1.21%	219.86K
SPDR® S&P 500® ETF Trust	17.84M	1.21%	-93.53K
State Street® SPDR® S&P 500® ETF	17.65M	1.19%	-18.96K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 20, 2026	Pegus Cheryl	-	Buy	$99.99K
May 20, 2026	LUDWIG EDWARD J	-	Buy	$202.91K
May 19, 2026	Habiger David C	-	Buy	$125.28K
May 20, 2026	Habiger David C	-	Buy	$125.82K
Feb 02, 2026	Mahoney Michael F	Chairman, President & CEO	Sell	$112.87K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	4	-
2026 Q1	-	2
2025 Q4	-	9
2025 Q3	-	7
2025 Q2	-	11

BSX Ownership FAQ

Who Owns Boston Scientific?

Boston Scientific shareholders are primarily institutional investors at 90.20%, followed by 0.23% insiders and 9.57% retail investors. The average institutional ownership in Boston Scientific's industry, Medical Device Stocks, is 35.88%, which Boston Scientific exceeds.

Who owns the most shares of Boston Scientific?

Boston Scientific’s largest shareholders are Vanguard group (139.69M shares, 9.42%), Blackrock funding, inc. /de (131.82M shares, 8.89%), and Fmr (74.23M shares, 5.01%). Together, they hold 23.32% of Boston Scientific’s total shares outstanding.

Does Blackrock own Boston Scientific?

BlackRock is not among the top 10 institutional shareholders of Boston Scientific.

Who is Boston Scientific’s biggest shareholder by percentage of total assets invested?

Bollard group is Boston Scientific’s biggest shareholder by percentage of total assets invested, with 34.26% of its assets in 18.53M Boston Scientific shares, valued at 1.16B$.

Who is the top mutual fund holder of Boston Scientific shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Boston Scientific shares, with 3.18% of its total shares outstanding invested in 47.28M Boston Scientific shares.

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